Hall W T, Claus G
The National Cancer Institute, Bethesda, Maryland 20014Graduate Department of Marine Science, Long Island University, Brookville. New York 11548.
J Phycol. 1967 Mar;3(1):37-51. doi: 10.1111/j.1529-8817.1967.tb04627.x.
Ultrastructural studies conducted on the intracellular symbiont of Glaucocystis nostochinearum Itz., a unicellular alga with a debated taxonomic position, have shown that the endosymbiont, although somewhat aberrant, is a blue-green alga. Due possibly to its intracellular habitat, it lacks the characteristic cyanophycean double-layered cell wall and the cells appear to be completely naked, bound only by a single plasma membrane. The protoplasm of the cell is differentiated into the lamellated chromatoplasm, which contains the photosynthetic pigments and polyphosphate granules, and a nonlamellar ccntroplasm, in which the nucleic material is dispersed. The usual cyanophycean organelles, as well as the different vacuoles and granules, with the exception of the formed bodies, are missing. Approximately 10% of the cells sliows a peculiar homogeneous area at one tip, the nature of which is unknown. Binary fission of the organism is mentioned. Since this cyanelle has not yet been classified, we name it Skujapelta nuda nov. gen., nov. sp.; and because of its structural peculiarities we find it necessary to create a new family for it, Skujapeltaceae in the order Chroococcales.
对蓝纤维藻（Glaucocystis nostochinearum Itz.）的细胞内共生体进行的超微结构研究表明，蓝纤维藻是一种分类地位存在争议的单细胞藻类，其细胞内共生体虽然有些异常，但仍是一种蓝藻。可能由于其细胞内生存环境，它缺乏蓝藻特有的双层细胞壁，细胞似乎完全裸露，仅由一层质膜包裹。细胞原生质分化为含光合色素和多聚磷酸盐颗粒的层状色素质，以及核酸物质分散于其中的非层状中心质。除成形体之外，蓝藻通常具有的细胞器以及不同的液泡和颗粒均不存在。约10%的细胞在一端显示出一个特殊的均匀区域，其性质尚不清楚。文中提到了该生物体的二分裂。由于这种蓝小体尚未被分类，我们将其命名为裸斯库贾佩尔藻（Skujapelta nuda），新属，新种；并且由于其结构特殊性，我们认为有必要为其建立一个新科，即色球藻目（Chroococcales）中的斯库贾佩尔藻科（Skujapeltaceae）。
